Eggs and snowballs can be thrown through glass panes

What I expected to happen was...:
The egg(or snowball) would hit the glass and break

What actually happened was...:
The egg(and snowball) flew threw the glass pane without stopping or breaking.

Steps to Reproduce:
1. Place a glass pane
2. Throw a snowball at the glass pane
3. Or, throw an egg at the glass pane

Result
The snowball or egg will pass through the glass pane.